An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Xavier Moore J, Donnelly JP, Griffin R, Safford MM, Howard G, Baddley J, Wang HE.Xavier Moore J, et al.Int J Epidemiol. 2017 Oct 1;46(5):1607-1617. doi: 10.1093/ije/dyx099.Int J Epidemiol. 2017.PMID: 29121335Free PMC article.
Donnelly JP, Dai Y, Colantonio LD, Zhao H, Safford MM, Baddley JW, Muntner P, Wang HE.Donnelly JP, et al. Among authors: baddley jw.BMC Med Res Methodol. 2020 Mar 4;20(1):54. doi: 10.1186/s12874-020-00937-9.BMC Med Res Methodol. 2020.PMID: 32131746Free PMC article.